Need Help With All these Algebra Problems.

2)A baseball player has a batting average of 0.175. What is the probability that he has exactly 3 hits in his next 7 at bats?
The probability is ________

3)Evaluate the expression and write the result in the form a+bi

4)Solve the following inequality. Write the answer in interval notation.

5)NASA launches a rocket at seconds. Its height, in meters above sea-level, as a function of time is given by
Assuming that the rocket will splash down into the ocean, at what time does splashdown occur?
The rocket splashes down after _______seconds
How high above sea-level does the rocket get at its peak?

The rocket peaks at _________meters above sea-level.

6)The equation has two solutions A and B where A<B and A=________ and B=_________

If you don't want to show the work on how you got it, it's fine. I understand that it's a lot of problems.